I agree completely with the above post. Bob Rayburn’s website is absolutely the best. If you can find one, Bob’s book, the “Colt Woodsman Pocket Guide” is an excellent resource. I believe his pocket guide is readable on his website, but having the actual book is nice to have at gun shows. It has been out of print for some time, but occasionally one will become available.
Tom Platt (Prewoodsman) on this forum will be able to supply additional info I’m sure.